Truck connection.



B. STEVENS.

TRUCK CONNECTION.

API'LIOATIOK FILED RAB. 30, 1910.

Patented N0i15, 1910.

51 n-uen Ew'e avelrs q 6mmup U TED STATES PATENTOFFICE.

EVIE STEVENS, OF PARK, WASHINGTON.

TRUCK CONNECTION.

To all whom it may concern;

' Be it known that I, Evin S'rnvnxs, a citizen of the United States ofAmerica, and a resident of thetown of Park, in the county of \Vhatcomand State. of \Vashington, have inrented certain new and usefulImprovements in Truck Connections, of which the following is aspecification.

The present invention pertains to improvements in center connections forlogging trucks, and it resides in the novel features and combinations ofparts hereinafter 'deserilied, and particularly pointed out'in theclaims.

The primary aim of the invention is to provide a substantial lockingconnection between the holster-and hunk of a logging truck.- h i Afurther object is-to provide a central connection between the bolsterand draft members with dpe provision for vertical ptay of the holste.r.

in the accompanying drawing, wherein similar reference numeralsdesignate correspomliug parts throughout: Figure 1 is a plan of alogging truck of a common form with my invention applied thereto, prtions of some of the parts being broken away. Fig. 2 is a verticalsection on line f2---2 of Specification of Letters Patent.

Fig. l with tilt: bunk in an angular-position, and Fig. 3 1s a plan ofthe center portion of the truck in partial section with the hunkremoved.

In the practice of my invention l' equip thetruck holster 1 with acenter hearing on nlate 2 combined with a stub pivot 3 and side hearingson plate. 4. 4, which as shown. P

are extended upwardly at opposite sides of pivot 3 and prowded withinwardly proieeting angularextensions or legs 4'. '-l'.

()n the bunk 5 l provide a center b aring comprising a-hub ('3' adaptedto receive pivot it freely and provided with a pm'ipheral flange 7. Thisflange is extended outwardly at opposite sid es 1. the hub to provideshoulders, as 7' which tit freely in the spaces or grooves between thelugs 4 and center hearing 2. r

In connection with huh ti 1 have shown an elongated hQad; which extendsin quartering relation to the tongues 7' and is provided with hearinghos-Yes 8'. These bosses are suitabl beveled on their side edges to fitin the channel of bank 5 and are provided Patented Nov. 15, 1910.

Application filed March 50.1910. Serial No. 552,431.

with a ertures for clam nin bolts 10 which P l p extend throughcorresponding apertures in the web of the bunk.

Combined with the draft members or timhers 11, 11 of the truck arecompanion bearings 12, 12 for the side bearings 4, 4. These companionbearings constitute cross webs of respective double knee irons, which,as shown. are applied at opposite sides of the bolster 1 with their stemportions extending along the opposing faces of the draft members. Eachknee iron is stiffened by a backing rib 12 and provided along the upperside edges of its stein portions with flanges 12" which are seated onrespective draft members. i The stem portions of the knee irons arefurther provided with suitable apertures for bolts, as 13, which areapplied to the draft members to secure the same in rigid connection withthe knee irons.

The side hearings 4, as shown, are provided with downwardly extendingstem portions 4" in which suitable apertures are provided for bolts, asl-t, which extend through bolster 1, while pivot 3 and head 8 of the hubare provided with central aperture for a king bolt, as 15. which may beemployed if desired but is notessential.

The draft members 11 are secured in the usual manner to end bars of thetruck frame it which is of the diamond arch bar 'type and carries aspring plank 17 upon' which the springs 18 for bolster 1 are supported.

in placing the bunk it. is presented crosswise of bolster 1, for clearpassage of tlauge 7 between the lugs 4', and lowered to seat hub 6 onthe center hearing .2 with pivot 3 projecting into the hub. The bunk isthen turned to its usual position, thereby bringing the shoulders 7'ltltttltlt the lugs 4:, as shown in Figs. 1 and it. 'hen the bunk islisted Ul' tilted in operating the truck the shoulders 7' that hearingagainst the side bearings 4 or lugs l, as the. case may be, and therebytake the strain from pi'vot 3 and secure the bank from displzurement.

The connection is particularly 'etiective when loading or unloading thetruck on a curved track where the truck bolster stands at an angle tothe bunk amt the latter is sub jected to both listing and tiltingstrains.

Having thus described my invention, what I claim as new, and desire tosecure by Letv device comprising interlocking means on said truck andbunk, the interlocking means of said truck overlapping the interlockingmeans of said bunk, whereby said bank is held against upwarddisplacement While being free for rotation.

2. In combination with the truck and a rotatably supported bunk thereon,spaced locking elements on said truck, and spaced locking elements onsaid bunk normally engaging under said first named locking elements. v

3. In combination with the truck and a 'rotatably supported bunkthereon, a-plurality of locking elements on said truck, and

locking elements on said bunk arranged in I bunk, a hub on one thereofprovided with outwardly projecting shoulders, a pivot on the otherthereof journaled in said hub, and

relatively fixed lugs on opposite sides of said pilot engaging over theshoulders of said u 5. In combination with the truck and the bunk, apivot on said truck, a hub on said bunk receiving said pivot, oppositeoutwardly projecting shoulders on said hub, and spaced lugs on saidtruck normally receiving the shoulders of said hub thereunder.

6. In combination with the truck and the bunk, a hub on said bunkprovided with opposite outwardly projecting shoulders a center bearingon said truck provided with a pivot engaging in said hub,- and lugs onsaid center bearing engaging over the shoulders of said hub.

7. In a truck, draft members provided with spaced companion bearings, a.bolster extending between the bearings of said draft members, and a bunkpivotally supported on said bolster.

S. In a truck, draft members provided with spaced companion bearings, abolster provided with side bearings opposed to the.

bearings of said draft members, means supporting said bolster forvertical movement, and a bunk on said bolster.

Signed at Park, Washington this 17" day of March 1910.

EVIE STEVENS. \Vitnesses v E. L. JOURDAN, C. M. SMITH.

